Documentation

Lex Architecture Decisions

Lex is built on a set of architectural decision records (ADRs) that define how the orchestrator routes, verifies, governs, and observes across its agent fleet. Browse the records below.

Orchestrator Architecture

The umbrella architecture record covering Lex's conductor pattern, verification-first step acceptance, and policy-as-code governance.

Workflow System

YAML-defined execution plans with schema validation, graph safety guarantees, and template reference integrity.

Policy & Governance

Central policy-as-code layer governing retry ceilings, mutating workflow controls, and verification requirements.

Routing Reliability

Golden routing corpus, overlap/tie detection, and deterministic scoring engine for workflow trigger selection.

Verification Contract

Evidence-based step acceptance that enforces proof before completion, replacing optimistic prose validation.

Model Capability Profiles

Capability profile abstraction for gpt-5.2, gpt-5.3, claude-opus, and claude-sonnet that keeps workflows model-agnostic.

Telemetry Contract

Canonical agent naming, checkpoint normalization, and bounded attribute sets for stable observability.